SFC without a script tag show an error when trying to import

• I have searched through existing issues
• I have read through docs
• I have read FAQ

Info

• Platform: macOS
• Vetur version:0.18.1
• VS Code version: 1.33.0

Problem

Components without a script tag and an export are flagged with an error:

File ‘…import_example/src/components/Simple.vue’ is not a module. Vetur(2306)

<!-- src/components/Simple.vue -->
<template>
  <h1>No script tag in this component</h1>
</template>

// App.vue
// ...
import Simple from "./components/Simple.vue";
// ...

Reproducible Case

Here is the diff to a brand new project created with vue-cli:

diff --git a/src/App.vue b/src/App.vue
index 7633616..04a51d9 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,17 +1,17 @@
 <template>
   <div id="app">
     <img alt="Vue logo" src="./assets/logo.png">
-    <HelloWorld msg="Welcome to Your Vue.js + TypeScript App"/>
+    <Simple/>
   </div>
 </template>
 
 <script lang="ts">
 import { Component, Vue } from 'vue-property-decorator';
-import HelloWorld from './components/HelloWorld.vue';
+import Simple from "./components/Simple.vue";
 
 @Component({
   components: {
-    HelloWorld,
+    Simple,
   },
 })
 export default class App extends Vue {}
diff --git a/src/components/Simple.vue b/src/components/Simple.vue
new file mode 100644
index 0000000..a7ad133
--- /dev/null
+++ b/src/components/Simple.vue
@@ -0,0 +1,3 @@
+<template>
+  <h1>No script tag in this component</h1>
+</template>

Here is the repo that shows the problem:

https://github.com/uri/vetur-import-example

[mpvosseller]

Until this is fixed adding the following worked for me:

<script>
export default {}
</script>

[dannysofftie]

As @mpvosseller suggested, adding below at the bottom of the file fixes the problem.

<script lang="ts">
import Vue from 'vue';
export default Vue.extend({
    //
});
</script>

NB: Am using TypeScript. But js counterpart should work just fine